<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
      }
      .wai {
        width: 250px;
        height: 250px;
        border: 1px solid#000;
        border-radius: 50%;
        margin: 20px auto;
        display: flex;
        justify-content: center;
        align-items: center;
        overflow: hidden;
        box-shadow: inset 0px 0px 2px 5px orange, inset 1px -1px 0px 10px #fff,
          inset 1px -1px 0px 30px #ccc, inset 1px -1px 0px 35px #fff,
          inset 1px -1px 0px 40px #ccc, inset 1px -1px 0px 45px #fff;
      }
      .wai::before {
        content: '儿童专属';
        box-sizing: border-box;
        display: flex;
        justify-content: center;
        align-items: center;
        width: 10%;
        height: 10%;
        position: absolute;
        background-color: rgb(95, 108, 111);
        color: #ccc;
        border-radius: 50%;
        font-size: 13px;
        z-index: 1px;
      }
      .fan {
        width: 90%;
        height: 90%;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
      }
      .fan:hover {
        /* 启动动画 */
        animation: ff 2s infinite linear;
      }
      /* 扇叶 */
      .fan > div {
        width: 30%;
        height: 45%;
        position: absolute;
        background-color: rgb(211, 218, 176);
        border-radius: 90%;
        border-radius: 90% 20% 80% 10%;
        left: 50%;
        top: 5.5%;
        box-shadow: inset 3px 1px 4px 0px #fff;
      }
      .fan > div:nth-of-type(2) {
        transform-origin: left bottom;
        transform: rotate(100deg);
      }
      .fan > div:nth-of-type(3) {
        transform-origin: left bottom;
        transform: rotate(240deg);
      }
      /* 风扇动画 */
      @keyframes ff {
        from {
          transform: rotate(360deg);
        }
        to {
          transform: rotate(-360deg);
        }
      }
    </style>
  </head>
  <body>
    <div class="wai">
      <div class="fan">
        <div></div>
        <div></div>
        <div></div>
      </div>
    </div>
  </body>
</html>
